binutils-2.20.1: import several patches from Debian

Import several patches from Debian to improve --no-add-needed handling
vs. weak symbols and branching to weak symbols on arm.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
This commit is contained in:
lumag
2011-08-16 16:07:44 +00:00
committed by Koen Kooi
parent 6d424db5a0
commit 246b0b07f7
5 changed files with 467 additions and 1 deletions
@@ -0,0 +1,240 @@
#!/bin/sh -e
## 152_arm_branches_to_weak_symbols.dpatch
##
## DP: Description: http://sourceware.org/ml/binutils/2010-04/msg00446.html
## DP: Description: taken from the trunk
if [ $# -ne 1 ]; then
echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
exit 1
fi
[ -f debian/patches/00patch-opts ] && . debian/patches/00patch-opts
patch_opts="${patch_opts:--f --no-backup-if-mismatch}"
case "$1" in
-patch) patch $patch_opts -p0 < $0;;
-unpatch) patch $patch_opts -p0 -R < $0;;
*)
echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
exit 1;;
esac
exit 0
gas/
2010-05-04 Nick Clifton <nickc@redhat.com>
* write.c (fixup_segment): Revert previous delta.
* config/tc-arm.h (TC_FORCE_RELOCATION_LOCAL): Also force the
generation of relocations for fixups against weak symbols.
2010-04-29 Nathan Sidwell <nathan@codesourcery.com>
* write.c (fixup_segment): Do not assume we know the section a
defined weak symbol is in.
* config/tc-arm.c (relax_adr, relax_branch, md_apply_fix): Treat
weak symbols as not known to be in the same section, even if they
are defined.
gas/testsuite/
2010-04-29 Nathan Sidwell <nathan@codesourcery.com>
* gas/arm/weakdef-1.s: New.
* gas/arm/weakdef-1.d: New.
* gas/arm/weakdef-2.s: New.
* gas/arm/weakdef-2.d: New.
* gas/arm/weakdef-2.l: New.
@DPATCH@
diff -urN gas.orig/config/tc-arm.c gas/config/tc-arm.c
--- a/gas/config/tc-arm.c 2010-02-22 08:06:52.000000000 +0000
+++ b/gas/config/tc-arm.c 2010-05-06 12:52:25.391085365 +0000
@@ -18207,7 +18207,8 @@
/* Assume worst case for symbols not known to be in the same section. */
if (!S_IS_DEFINED (fragp->fr_symbol)
- || sec != S_GET_SEGMENT (fragp->fr_symbol))
+ || sec != S_GET_SEGMENT (fragp->fr_symbol)
+ || S_IS_WEAK (fragp->fr_symbol))
return 4;
val = relaxed_symbol_addr (fragp, stretch);
@@ -18250,7 +18251,8 @@
/* Assume worst case for symbols not known to be in the same section. */
if (!S_IS_DEFINED (fragp->fr_symbol)
- || sec != S_GET_SEGMENT (fragp->fr_symbol))
+ || sec != S_GET_SEGMENT (fragp->fr_symbol)
+ || S_IS_WEAK (fragp->fr_symbol))
return 4;
#ifdef OBJ_ELF
@@ -19463,22 +19465,23 @@
not have a reloc for it, so tc_gen_reloc will reject it. */
fixP->fx_done = 1;
- if (fixP->fx_addsy
- && ! S_IS_DEFINED (fixP->fx_addsy))
+ if (fixP->fx_addsy)
{
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("undefined symbol %s used as an immediate value"),
- S_GET_NAME (fixP->fx_addsy));
- break;
- }
+ const char *msg = 0;
- if (fixP->fx_addsy
- && S_GET_SEGMENT (fixP->fx_addsy) != seg)
- {
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("symbol %s is in a different section"),
- S_GET_NAME (fixP->fx_addsy));
- break;
+ if (! S_IS_DEFINED (fixP->fx_addsy))
+ msg = _("undefined symbol %s used as an immediate value");
+ else if (S_GET_SEGMENT (fixP->fx_addsy) != seg)
+ msg = _("symbol %s is in a different section");
+ else if (S_IS_WEAK (fixP->fx_addsy))
+ msg = _("symbol %s is weak and may be overridden later");
+
+ if (msg)
+ {
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ msg, S_GET_NAME (fixP->fx_addsy));
+ break;
+ }
}
newimm = encode_arm_immediate (value);
@@ -19504,24 +19507,25 @@
unsigned int highpart = 0;
unsigned int newinsn = 0xe1a00000; /* nop. */
- if (fixP->fx_addsy
- && ! S_IS_DEFINED (fixP->fx_addsy))
+ if (fixP->fx_addsy)
{
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("undefined symbol %s used as an immediate value"),
- S_GET_NAME (fixP->fx_addsy));
- break;
- }
+ const char *msg = 0;
- if (fixP->fx_addsy
- && S_GET_SEGMENT (fixP->fx_addsy) != seg)
- {
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("symbol %s is in a different section"),
- S_GET_NAME (fixP->fx_addsy));
- break;
+ if (! S_IS_DEFINED (fixP->fx_addsy))
+ msg = _("undefined symbol %s used as an immediate value");
+ else if (S_GET_SEGMENT (fixP->fx_addsy) != seg)
+ msg = _("symbol %s is in a different section");
+ else if (S_IS_WEAK (fixP->fx_addsy))
+ msg = _("symbol %s is weak and may be overridden later");
+
+ if (msg)
+ {
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ msg, S_GET_NAME (fixP->fx_addsy));
+ break;
+ }
}
-
+
newimm = encode_arm_immediate (value);
temp = md_chars_to_number (buf, INSN_SIZE);
diff -urN gas.orig/config/tc-arm.h gas/config/tc-arm.h
--- a/gas/config/tc-arm.h 2009-09-01 00:24:01.000000000 +0000
+++ b/gas/config/tc-arm.h 2010-05-06 12:53:42.784835970 +0000
@@ -183,6 +183,7 @@
(!(FIX)->fx_pcrel \
|| (FIX)->fx_r_type == BFD_RELOC_ARM_GOT32 \
|| (FIX)->fx_r_type == BFD_RELOC_32 \
+ || ((FIX)->fx_addsy != NULL && S_IS_WEAK ((FIX)->fx_addsy)) \
|| TC_FORCE_RELOCATION (FIX))
/* Force output of R_ARM_REL32 relocations against thumb function symbols.
diff -urN gas.orig/testsuite/gas/arm/weakdef-1.d gas/testsuite/gas/arm/weakdef-1.d
--- a/gas/testsuite/gas/arm/weakdef-1.d 1970-01-01 00:00:00.000000000 +0000
+++ b/gas/testsuite/gas/arm/weakdef-1.d 2010-05-06 12:52:25.391085365 +0000
@@ -0,0 +1,20 @@
+# name: Thumb branch to weak
+# as:
+# objdump: -dr
+# This test is only valid on ELF based ports.
+#not-target: *-*-*coff *-*-pe *-*-wince *-*-*aout* *-*-netbsd *-*-riscix*
+
+.*: +file format .*arm.*
+
+
+Disassembly of section .text:
+
+0+000 <Weak>:
+ 0: e7fe b.n 2 <Strong>
+ 0: R_ARM_THM_JUMP11 Strong
+
+0+002 <Strong>:
+ 2: f7ff bffe b.w 0 <Random>
+ 2: R_ARM_THM_JUMP24 Random
+ 6: f7ff bffe b.w 0 <Weak>
+ 6: R_ARM_THM_JUMP24 Weak
diff -urN gas.orig/testsuite/gas/arm/weakdef-1.s gas/testsuite/gas/arm/weakdef-1.s
--- a/gas/testsuite/gas/arm/weakdef-1.s 1970-01-01 00:00:00.000000000 +0000
+++ b/gas/testsuite/gas/arm/weakdef-1.s 2010-05-06 12:52:25.391085365 +0000
@@ -0,0 +1,18 @@
+ .syntax unified
+ .text
+ .thumb
+
+ .globl Weak
+ .weak Weak
+ .thumb_func
+ .type Weak, %function
+Weak:
+ b Strong
+ .size Weak, .-Weak
+
+ .globl Strong
+ .type Strong, %function
+Strong:
+ b Random
+ b Weak
+ .size Strong, .-Strong
diff -urN gas.orig/testsuite/gas/arm/weakdef-2.d gas/testsuite/gas/arm/weakdef-2.d
--- a/gas/testsuite/gas/arm/weakdef-2.d 1970-01-01 00:00:00.000000000 +0000
+++ b/gas/testsuite/gas/arm/weakdef-2.d 2010-05-06 12:52:25.391085365 +0000
@@ -0,0 +1,5 @@
+# name: adr of weak
+# as:
+# error-output: weakdef-2.l
+# This test is only valid on ELF based ports.
+#not-target: *-*-*coff *-*-pe *-*-wince *-*-*aout* *-*-netbsd *-*-riscix*
diff -urN gas.orig/testsuite/gas/arm/weakdef-2.l gas/testsuite/gas/arm/weakdef-2.l
--- a/gas/testsuite/gas/arm/weakdef-2.l 1970-01-01 00:00:00.000000000 +0000
+++ b/gas/testsuite/gas/arm/weakdef-2.l 2010-05-06 12:52:25.391085365 +0000
@@ -0,0 +1,3 @@
+[^:]*: Assembler messages:
+[^:]*:9: Error: symbol Weak is weak and may be overridden later
+[^:]*:10: Error: symbol Weak is weak and may be overridden later
diff -urN gas.orig/testsuite/gas/arm/weakdef-2.s gas/testsuite/gas/arm/weakdef-2.s
--- a/gas/testsuite/gas/arm/weakdef-2.s 1970-01-01 00:00:00.000000000 +0000
+++ b/gas/testsuite/gas/arm/weakdef-2.s 2010-05-06 12:52:25.391085365 +0000
@@ -0,0 +1,10 @@
+ .syntax unified
+ .text
+ .globl Strong
+Strong:
+ adrl r0,Strong
+ adr r0,Strong
+ .globl Weak
+ .weak Weak
+Weak: adrl r0,Weak
+ adr r0,Weak
@@ -0,0 +1,65 @@
#! /bin/sh /usr/share/dpatch/dpatch-run
## 200_elflink_%B_fixes.dpatch by <kirr@landau.phys.spbu.ru>
##
## All lines beginning with `## DP:' are a description of the patch.
## DP: Description: Fixes several msgs; needed for later elflink patches
## DP: Upstream status: submitted upstream for binutils-2_20-branch
2010-08-07 Kirill Smelkov <kirr@landau.phys.spbu.ru>
Backport from mainline:
2009-10-12 Roland McGrath <roland@frob.com>
* elflink.c (elf_link_add_object_symbols, _bfd_elf_merge_symbol):
Fix %s that should be %B in several message formats.
@DPATCH@
diff --git a/bfd/elflink.c b/bfd/elflink.c
index c42c6e1..4a348de 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -1110,19 +1110,19 @@ _bfd_elf_merge_symbol (bfd *abfd,
if (tdef && ntdef)
(*_bfd_error_handler)
- (_("%s: TLS definition in %B section %A mismatches non-TLS definition in %B section %A"),
+ (_("%B: TLS definition in %B section %A mismatches non-TLS definition in %B section %A"),
tbfd, tsec, ntbfd, ntsec, h->root.root.string);
else if (!tdef && !ntdef)
(*_bfd_error_handler)
- (_("%s: TLS reference in %B mismatches non-TLS reference in %B"),
+ (_("%B: TLS reference in %B mismatches non-TLS reference in %B"),
tbfd, ntbfd, h->root.root.string);
else if (tdef)
(*_bfd_error_handler)
- (_("%s: TLS definition in %B section %A mismatches non-TLS reference in %B"),
+ (_("%B: TLS definition in %B section %A mismatches non-TLS reference in %B"),
tbfd, tsec, ntbfd, h->root.root.string);
else
(*_bfd_error_handler)
- (_("%s: TLS reference in %B mismatches non-TLS definition in %B section %A"),
+ (_("%B: TLS reference in %B mismatches non-TLS definition in %B section %A"),
tbfd, ntbfd, ntsec, h->root.root.string);
bfd_set_error (bfd_error_bad_value);
@@ -4437,7 +4437,7 @@ error_free_dyn:
if ((elf_dyn_lib_class (abfd) & DYN_NO_NEEDED) != 0)
{
(*_bfd_error_handler)
- (_("%s: invalid DSO for symbol `%s' definition"),
+ (_("%B: invalid DSO for symbol `%s' definition"),
abfd, name);
bfd_set_error (bfd_error_bad_value);
goto error_free_vers;
@@ -12495,7 +12495,7 @@ _bfd_elf_get_dynamic_reloc_section (bfd * abfd,
section does not exist it is created and attached to the DYNOBJ
bfd and stored in the SRELOC field of SEC's elf_section_data
structure.
-
+
ALIGNMENT is the alignment for the newly created section and
IS_RELA defines whether the name should be .rela.<SEC's name>
or .rel.<SEC's name>. The section name is looked up in the
--
1.7.2.1.44.g721e7
@@ -0,0 +1,70 @@
#! /bin/sh /usr/share/dpatch/dpatch-run
## 201_elflink_improve_errors.dpatch by <kirr@landau.phys.spbu.ru>
##
## All lines beginning with `## DP:' are a description of the patch.
## DP: Improves error messages regarding -no-add-needed cases; needed for
## DP: later elflink patches
## DP: Upstream status: submitted upstream for binutils-2_20-branch
2010-08-07 Kirill Smelkov <kirr@landau.phys.spbu.ru>
Backport from mainline:
2009-11-05 Nick Clifton <nickc@redhat.com>
* elflink.c (elf_link_add_object_symbols): Improve error
message generated when a symbol is left unresolved because a
--no-add-needed command line option has prevented the
inclusion of the DSO defining it.
@DPATCH@
diff --git a/bfd/elflink.c b/bfd/elflink.c
index 4a348de..10eee8c 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -3866,6 +3866,7 @@ error_free_dyn:
bfd_boolean common;
unsigned int old_alignment;
bfd *old_bfd;
+ bfd * undef_bfd = NULL;
override = FALSE;
@@ -4097,6 +4098,20 @@ error_free_dyn:
name = newname;
}
+ /* If this is a definition of a previously undefined symbol
+ make a note of the bfd that contained the reference in
+ case we need to refer to it later on in error messages. */
+ if (! bfd_is_und_section (sec))
+ {
+ h = elf_link_hash_lookup (elf_hash_table (info), name, FALSE, FALSE, FALSE);
+
+ if (h != NULL
+ && (h->root.type == bfd_link_hash_undefined
+ || h->root.type == bfd_link_hash_undefweak)
+ && h->root.u.undef.abfd)
+ undef_bfd = h->root.u.undef.abfd;
+ }
+
if (!_bfd_elf_merge_symbol (abfd, info, name, isym, &sec,
&value, &old_alignment,
sym_hash, &skip, &override,
@@ -4437,9 +4452,12 @@ error_free_dyn:
if ((elf_dyn_lib_class (abfd) & DYN_NO_NEEDED) != 0)
{
(*_bfd_error_handler)
- (_("%B: invalid DSO for symbol `%s' definition"),
+ (_("%B: undefined reference to symbol '%s'"),
+ undef_bfd == NULL ? info->output_bfd : undef_bfd, name);
+ (*_bfd_error_handler)
+ (_("note: '%s' is defined in DSO %B so try adding it to the linker command line"),
abfd, name);
- bfd_set_error (bfd_error_bad_value);
+ bfd_set_error (bfd_error_invalid_operation);
goto error_free_vers;
}
--
1.7.2.1.44.g721e7
@@ -0,0 +1,87 @@
#! /bin/sh /usr/share/dpatch/dpatch-run
## 202_elflink_noaddneeded_vs_weak.dpatch by <kirr@landau.phys.spbu.ru>
##
## All lines beginning with `## DP:' are a description of the patch.
## DP: Fixes '-no-add-needed breaks linking with weak symbols'
## DP: Upstream status: submitted upstream for binutils-2_20-branch
2010-08-07 Kirill Smelkov <kirr@landau.phys.spbu.ru>
Backport from mainline:
2010-01-21 Nick Clifton <nickc@redhat.com>
* elflink.c (elf_link_add_object_symbols): Look up name of
undefined symbol both before and after versioning has been
applied. Do not bother with symbols that are weakly undefined.
@DPATCH@
diff --git a/bfd/elflink.c b/bfd/elflink.c
index 10eee8c..e058064 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -3991,6 +3991,20 @@ error_free_dyn:
unsigned int vernum = 0;
bfd_boolean skip;
+ /* If this is a definition of a symbol which was previously
+ referenced in a non-weak manner then make a note of the bfd
+ that contained the reference. This is used if we need to
+ refer to the source of the reference later on. */
+ if (! bfd_is_und_section (sec))
+ {
+ h = elf_link_hash_lookup (elf_hash_table (info), name, FALSE, FALSE, FALSE);
+
+ if (h != NULL
+ && h->root.type == bfd_link_hash_undefined
+ && h->root.u.undef.abfd)
+ undef_bfd = h->root.u.undef.abfd;
+ }
+
if (ever == NULL)
{
if (info->default_imported_symver)
@@ -4098,16 +4112,15 @@ error_free_dyn:
name = newname;
}
- /* If this is a definition of a previously undefined symbol
- make a note of the bfd that contained the reference in
- case we need to refer to it later on in error messages. */
- if (! bfd_is_und_section (sec))
+ /* If necessary, make a second attempt to locate the bfd
+ containing an unresolved, non-weak reference to the
+ current symbol. */
+ if (! bfd_is_und_section (sec) && undef_bfd == NULL)
{
h = elf_link_hash_lookup (elf_hash_table (info), name, FALSE, FALSE, FALSE);
if (h != NULL
- && (h->root.type == bfd_link_hash_undefined
- || h->root.type == bfd_link_hash_undefweak)
+ && h->root.type == bfd_link_hash_undefined
&& h->root.u.undef.abfd)
undef_bfd = h->root.u.undef.abfd;
}
@@ -4448,12 +4461,14 @@ error_free_dyn:
/* A symbol from a library loaded via DT_NEEDED of some
other library is referenced by a regular object.
Add a DT_NEEDED entry for it. Issue an error if
- --no-add-needed is used. */
- if ((elf_dyn_lib_class (abfd) & DYN_NO_NEEDED) != 0)
+ --no-add-needed is used and the reference was not
+ a weak one. */
+ if (undef_bfd != NULL
+ && (elf_dyn_lib_class (abfd) & DYN_NO_NEEDED) != 0)
{
(*_bfd_error_handler)
(_("%B: undefined reference to symbol '%s'"),
- undef_bfd == NULL ? info->output_bfd : undef_bfd, name);
+ undef_bfd, name);
(*_bfd_error_handler)
(_("note: '%s' is defined in DSO %B so try adding it to the linker command line"),
abfd, name);
--
1.7.2.1.44.g721e7
@@ -1,6 +1,6 @@
require binutils.inc require binutils.inc
PR = "r5" PR = "r6"
LIC_FILES_CHKSUM="\ LIC_FILES_CHKSUM="\
file://src-release;endline=17;md5=4830a9ef968f3b18dd5e9f2c00db2d35\ file://src-release;endline=17;md5=4830a9ef968f3b18dd5e9f2c00db2d35\
@@ -30,6 +30,10 @@ SRC_URI = "\
file://libiberty_path_fix.patch \ file://libiberty_path_fix.patch \
file://binutils-poison.patch \ file://binutils-poison.patch \
file://libtool-rpath-fix.patch \ file://libtool-rpath-fix.patch \
file://152_arm_branches_to_weak_symbols.patch \
file://200_elflink_%B_fixes.patch \
file://201_elflink_improve_noaddneeded_errors.patch \
file://202_elflink_noaddneeded_vs_weak.patch \
" "
SRC_URI[md5sum] = "9cdfb9d6ec0578c166d3beae5e15c4e5" SRC_URI[md5sum] = "9cdfb9d6ec0578c166d3beae5e15c4e5"